Home / 89,660.32-123,731.65-51,421.38

Finding the Fourth Proportional to 89,660.32, 123,731.65 and 51,421.38

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Solution

The fourth proportional to 89,660.32, 123,731.65 and 51,421.38 is: 70,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,660.32 : 123,731.65 = 51,421.38 : x
  2. Step 2: Convert to fraction form
    89,660.32/123,731.65 = 51,421.38/x
  3. Step 3: Cross multiply
    89,660.32x = 123,731.65 × 51,421.38
  4. Step 4: Simplify right side
    89,660.32x = 6,362,452,488.95
  5. Step 5: Solve for x
    x = 6,362,452,488.95/89,660.32
  6. Step 6: Final answer
    x = 70,961.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.